Dipicolinic acid function

Fig. 14 The synthesis of a nuclear targeting complex according to the [2 + 1] principle. The first function for nucleus targeting is acridine orange, the dipicolinic acid may serve for binding the second function. The organometallic complex mediates the coupling of the two biological vectors...

The dipicolinic acid platform has proven to be extremely versatile, leading to numerous applications of its tris-complexes with Eu and Tb, in particular in analytical and bioanalytical chemistry (see Section 2.5 for photophysical properties and Section 6.2 for bioanalytical applications). As a consequence, researchers have invented ways of modulating the photophysical properties, principally by introducing substituents on the para position of the pyridine ring, a relatively easy synthetic procedure. Simple substituents (e.g.. Cl, Br, NH2, NHCOCH3) are introduced by substitution of the hydroxyl function of chelidamic acid under... 

It has been demonstrated that dimeric ternary Ln(iii)-cyclen complexes can be formed in solution based on the general self-assembly structure dipicolinic-acid-(Ln-cyclen)2 (see Fig. 13) and it has been shown that these self-assemblies can function as anion displacement probes, acting as a sensor or probe for the detection of H2P20y , H2P04 and... 

Figure 10. A comparison of dipicolinic acid adsorption on spherical (a-Fe203) (O, at 4 hr) and Cr(OH)3 ( , at 3 days) particles as a function of the pH at 25 °C and ionic strength of 5-10 mol dm The initial dipicolinic acid concentration is 2-10 mol dm [23],...

Figure 10 compares the adsorption densities of dipicolinic (2,6-pyridine dicarboxylic) acid on monodispersed spherical crystalline hematite (a-Fe20s) particles of 100 nm in diameter and on amorphous chromium hydroxide spheres of 350 nm in diameter, as a function of the pH [23]. Note the different scale on the ordinates referring to the two adsorbents. The maximum in this plot is expected, due to the effect of the pH on the dissociation of the acid and on the charge on the adsorbent particles [23]. 

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